參數資料
型號: L6996D
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24
封裝: MO-153AD, TSSOP-24
文件頁數: 23/26頁
文件大小: 272K
代理商: L6996D
L6996
6/26
Figure 1. Functional & Block Diagram
configuration
DAC
Reference
chain
V
+
-
V
IN
5V
OUT
V
+
-
mode
transition
dynamic
CS-
CS+
VID4:0
delay
Toff
min
one-shot
80
us
detection
transition
dynamic
CS-
VID4:0
5
bit
DAC
VPROG
OSC
FB+
FB-
PGND
LGATE
VDR
PHASE
HGATE
BOOT
GND
VCC
OVP
PGOOD
SHDN
SS
ILIM
negative
current
limit
CS-
CS+
1.416
-
1.236V
bandgap
OSC
0.05
comparator
LS
and
HS
anti-cross-conduction
comparators
comp
V(LGATE)<0.5V
comp
V(PHASE)<0.2V
HS
control
pwm
comparator
positive
current
limit
-
+
-
+
undervoltage
comparator
OSC
one-shot
+
0.05
ILIM
Ton
LS
control
dynamic
transition
control
HS
driver
dynamic
overvoltage
comparator
transition
-
5
uA
Ton=
Kosc
V(CS-)/V(OSC)
+
VCC
level
shifter
LS
driver
5
uA
PHASE
0.6
VPROG
+
mode
CS-
Ton=
Kosc
V(CS-)/V(OSC)
Ton
min
one-shot
+
-
zero-cross
comparator
pgood
comparators
soft-start
+
-
1.075
VPROG
0.925
VPROG
power
management
control
1.12
VPROG
CS-
R
S
IC
enable
R
Q
S
R
S
Q
S
R
Q
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